| Challenger Ochsenhausen | 2020/07/17 10:30 | Jakub Folwarski v Jakub Kosowski | L | 1-3 |
| Challenger Ochsenhausen | 2020/07/13 06:30 | Jakub Kosowski v Jakub Folwarski | L | 3-0 |
| Challenger Ochsenhausen | 2018/10/25 09:50 | Jakub Folwarski v Jakub Kosowski | W | 3-2 |
| Challenger Ochsenhausen | 2018/10/22 12:30 | Jakub Kosowski v Jakub Folwarski | L | 3-1 |
| Challenger Ochsenhausen | 2018/06/06 08:30 | Jakub Kosowski v Jakub Folwarski | L | 3-0 |
| Challenger Ochsenhausen | 2018/06/04 07:10 | Jakub Kosowski v Jakub Folwarski | L | 3-0 |
| Challenger Ochsenhausen | 2018/05/30 06:30 | Jakub Folwarski v Jakub Kosowski | L | 1-3 |
| Challenger Ochsenhausen | 2017/09/06 09:50 | Jakub Kosowski v Jakub Folwarski | W | 2-3 |
| Challenger Ochsenhausen | 2021/12/21 17:40 | Jakub Folwarski v Vladislav Ursu | L | 1-3 |
| Challenger Ochsenhausen | 2021/12/12 15:06 | Patryk Zatowka v Jakub Folwarski | L | 3-0 |
| Challenger Ochsenhausen | 2021/11/25 17:20 | Jakub Folwarski v Grigory Vlasov | L | 0-3 |
| Challenger Ochsenhausen | 2021/10/29 16:20 | Jakub Folwarski v Marek Badowski | W | 3-2 |
| Challenger Ochsenhausen | 2021/09/10 16:40 | Jakub Folwarski v Daniel Gorak | L | 2-3 |
| TT Star Series | 2021/08/27 14:10 | Michal Obeslo v Jakub Folwarski | L | 3-0 |
| TT Star Series | 2021/08/27 12:45 | Dmitrij Prokopcov v Jakub Folwarski | W | 1-3 |
| TT Star Series | 2021/08/27 11:15 | Michal Benes v Jakub Folwarski | W | 2-3 |
| Challenger Ochsenhausen | 2020/09/25 12:50 | Jakub Kosowski v Alberto Mino | L | 1-3 |
| Challenger Ochsenhausen | 2020/09/25 11:35 | Jakub Kosowski v Dauud Cheaib | W | 3-0 |
| Challenger Ochsenhausen | 2020/09/25 10:30 | Jiri Martinko v Jakub Kosowski | W | 1-3 |
| Challenger Ochsenhausen | 2020/09/24 12:30 | Jakub Kosowski v Miroslav Horejsi | L | 0-3 |
| Challenger Ochsenhausen | 2020/09/24 11:10 | Niagol Stoyanov v Jakub Kosowski | W | 2-3 |
| Challenger Ochsenhausen | 2020/09/24 09:10 | Dauud Cheaib v Jakub Kosowski | W | 2-3 |
| Challenger Ochsenhausen | 2020/09/23 13:10 | Alberto Mino v Jakub Kosowski | W | 2-3 |
| Challenger Ochsenhausen | 2020/09/23 09:50 | Mihai Bobocica v Jakub Kosowski | L | 3-2 |